Roof drain



A. J. FILKINS June 21, 1938.

ROOF DRAIN Filed DSC. 18, 1936 Patented June 21, 1938 UNITED STATES ROOFDRAIN `Arthur J. Filkins, Chicago, Ill., assignor to Paul Dickinson,Inc.. Chicago, Ill., a corporation of Illinois Application peeember18,1936, sei-iai Ne. 116,529

i) Claims.

yThis invention relates vin general to a drain outlet for a flat orplain surface and is more particul'arly described yas an outlet for aroof.

Among the important objects of the inven- 5 tion are; the provision ofimproved means for removably attaching a domed outlet to a roof insert;to providea domed outlet with an integral clamping ring gravel stop; toprovide an 'iinprovedroof insert for a drain of this type; toi-provideimproved means for attaching the roof insert to a drain pipe; and ingeneral to produce the structure herein shown and described.

In the accompanying drawing illustrating a preferred 'embodiment 'of theinvention,

Fig, 1 is 'a View partly in section and partly in 'side elevation, ofaro'of drain structure as applied to a roof; and

Fig. 2 is a top View of the structure shown in Fig. l.

In 'a roof drain it is desirableto provide an outlet which has a domedstructure extending above the ordinary roof level to provide for a rushof Water or other liquid, and to provide .an increased outlet thereforeven 'though the ordinary lower drain openings are clogged by'an'ac'cu'mmulation of dirt or debris.

It is also desirable to provide a roof drain which is leasily andquickly removable for cleaning but which 'may be inserted tightly inplace, clamping an extending edge of the roofing material such 'aswaterproof paper, felt or 'the like, to inake a waterproof joint. In astructure of this kindy it is also desirable to provide a gravel stopwhich 'will engage the ordinary par- "ticls *bf gravel vor other roofcovering material and prevent it from clogging the ordinary `lowerdischarge openings of the drain. A practical roof drain must also bequickly and adjustably attached-at the end of a discharge pipe so thatthe roof member may be easily adjusted and set in position, producing awaterproof joint with the pipe.

Referring now more particularly to the drawing, a roof drain comprisinga roof member 4 is set into or suitably supported by a roof structure 5,including also a roof covering G of layers of roofing material, usuallyWaterproof paper or felt, but may also be sheet metal or other similarroofing material, the upper edge of the member 4 which is preferably inthe form of a circular funnel is ush with the edge of the roof below theroofing material 6 so that the edge of this material extends into thedownwardly inclined edgeof the roof member 4.

(Cl. 18e- 31) To connect the roof member 4 to a downspout 1, the lower`end of the member is formed with a glandv extension 8 having an inward'angular extension il and closely embracing the pipe and forming `apartition for packing material lll, such as 'oakurn or the like,inserted from the bottom of the member around the pipe. and for asealing gasket Il of lead and the like which 4is poured in at the`bottom of the member 4 around the pipe l and held in place by a sealinggroove I2. At the bottom of the extension is :a clamping gland ring "I3having an inclined surface |4 for wedging a packing material l5 such asfilax packing in and around the bottom of the gland extension 8 andagainst the parti- -tion 9. This ring i3 is `clamped tightly against thepacking I by fastening bolts i'i inserted through the out-er ilange ofthe ring i3 and through corresponding threaded ears l1 at the outer sideof the extension 8.

A dome member 20 has a number of lateral openings or slits 2l in itssides and additional slits or `openings 22 adjacent the bottom and atthe top of the dome are a plurality of openings 23, the sides of whichare widened inwardly to vprevent the lodgment of any dirt which is largeenough to pass through the outer surface. The lower rim or edge 24 ofthe dome is continuous and has an outer inclined surface 25corresponding to the inner inclination of the member '4. The outer edgealso has a partially overlapping rirn 26 which extends over the top ofthe member 4 and has a number of V-shaped grooves 21 in the upper edgewhich form liquid openings tothe inside of the rim, the rim itselfconstituting a gravel stop for preventing roof material from passingfreely to the lower edges of the openings 2l and 22.

Inside of the roof member 4 at each side thereof are a pair `ofprojections 28, together forming a bifurcated hook for engaging the head29 of a fastening bolt 30 which is inserted from the inside through oneof the slot's 2l to the outer side of the dome where a clamping surface3| is provided for engaging a fastening nut 32 preferably of the wingnut type so that it may be quickly turned up on the threaded portion ofthe bolt by the hand or fingers of an operator.

In applying the dome member, the bolts extending loosely throughopposite slots 2l are moved to engage their heads with the hooks 28 andthe thumb nuts 32 are tightened in place which causes the inclined`surface 25 to bear against the edge of the roofing sheets E whichoverlap the inclined edge of the roof member 4 and the slightlyoverhanging rim 26 is drawn down tightly against the top of the roofingmaterial so that it is clamped tightly in place, making a watertightconnection and preventing any leakage around the roof drain.

'I'he projections 28 which form the hooks for engaging the fasteningbolts 30 are located below the clamping surfaces 25 and 3l so that theheads 29 of the bolts are easily engaged with the fastening hooks formedby the projections without obstruction by the edge of the roofing coveror sheets 6, so that it is not necessary to insert the bolts through thecover nor to damage or disgure the cover in any way. Furthermore thebolt heads are more easily engaged with the hooks than by attempting toinsert them in a threaded opening and thus to tighten the partstogether. In practice the bolts are inserted from the bottom through theperforations of the dome and the fastening wing nuts 32 are loosened sothat the heads are easily extended and manipulated to engage the hooks.

'Iihe slots 2l and 22 as well as the openings 23 are largest toward thebottom so that they tend to be self-cleaning for dirt and foreignmaterial which tends to lodge and fill up the openings, the gravel stoprim tends to prevent the roof particles from flowing over onto the roofdrain and the openings 21 allow the water or other liquid to passthrough almost to the level of the roofing material itself. The domemember of the roof drain is easily and quickly removed for cleaning orreplacement and the roof drain itself is easily and quickly installed onthe upper end of a pipe and in contact with 'the roof supportingmembers.

I claim:

1. A roof drain comprising a roof member and a perforate dome havingcorresponding inclined surfaces, to engage a roof cover therebetweenfastening means extending through openings of the dome, and projectionson the inside of the member beyond and free from the edges of a roofcover to engage the fastening means without obstruction with said cover.

2. In a roof drain, a roof member and a dome therefor having inclinedsurfaces fitting together at the upper and inner edge of the member andadapted to engage the edge of roof cover layers therebetween, and meansto clamp the dome against the member with roof layers therebetween, saidmeans comprising a bolt extending through the dome, and the roof memberhaving projections below the edge of the roof cover for makingengagement with the bolt head.

3. In a roof drain, a roof member having an inner inclined funnelsurface, a perforate dome having a rim with an inclined surface to fitthe outer funnel surface, and with an outer portion partiallyoverlapping the upper rim of the funnel surface, pairs of projections atthe inside of thel wardly extending portion for the passage of wateralmost to the level of the roof member.

5. In a roof drain, a roof member and a dome seated within andcontacting at its edge in the member and means for securing it theretoat the inside of the seating edge, the dome having openings through itswall which are larger at the bottoms than at the tops to preventclogging the openings, and the lower ends of the openings being belowthe securing edge and below the level of the upper edge of the roofmember.

6. In a roof drain, a covering dome having an outer rim and a connectedwall which extends below the upper edge of the rim and with slotstherein extending vertically and below the rim, and a roof member inwhich the dome is seated by contact with the said outer rim only.

7. In a roof drain, a perforate dome having an outer rim extendingupwardly above the lower ends of the perforations with an outer beveledclamping edge and having notches in the upper edge of the rim forming agravel stop but allowling a liquid drainage through the notches, and

a roof member having an inner inclined surface at the top to engage saidclamping edge.

8. In a roof drain, a roof member with a funnel opening, a perforatedome having an outer clamping rim to fit the top of the opening with aroof layer therebetween, fastening bolts extending through opposite domeopenings, projections in the funnel below the clamping rim to engage thebolt heads, and a contact surface at the outer side of the dome throughwhich the bolt extends for flatly engaging a fastening nut on the bolt.

9. In a roof drain, a roof member having a funnel opening with a flangeat one end to eX- tend under the roong and a drain pipe extension at theother, means forming a water-tight drain pipe connection, and meansincluding a perforate dome with an outer engaging rim for clamping theedge of roofing between it and the upper edge of the funnel for forminga watertight connection at the top of the roof, said means includingfastening devices inserted through perforations of the dome and engagingthe roof member vbeyond and free of the clamped edge of the roofing.

ARTHUR J. FILKINS.

